(a) Write down the Maxwell's equations in integral form and explain their physical interpretations in electromagnetics. (b) Define phase velocity…

(a) Write down the Maxwell's equations in integral form and explain their physical interpretations in electromagnetics.

(b) Define phase velocity and group velocity. Explain the relationship between phase velocity and group velocity in dispersive medium.

(c) Convert decimal number 250.5 to base 3 and base 7. Round the answers keeping three digits after the point.